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maria [59]
3 years ago
6

Henry wrote 4z² - z² as 4. Are 4z² - z² and 4 equivalent expressions?

Mathematics
1 answer:
Lelechka [254]3 years ago
7 0
No, a lone variable has an invisible one in front of it, So 4z (can’t put the top number sorry) So 4z - z would equal 3z
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Step-by-step explanation:

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4 0
3 years ago
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6 mins goes into 60 mins ten times.
so, first do
5000 \times 10 = 50000
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7 0
3 years ago
The average of four numbers is 38, and the average of the first two numbers is 42, and the average of the last three numbers is
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Answer:

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Step-by-step explanation:

let the numbers be a+b+c+d.

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; (a+b+c+d)/4 = 38

(a+b+c+d) = 152 ......equ1

the average of the first two numbers is 42

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the average of the last three numbers is 36

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(b+c+d) = 108 .....equ3

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input the value of a into equ2

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I hope this helps.

3 0
4 years ago
your brother has $200 saved for a vacation. His airplane ticket is $637. Write and solve an inequality to find out how much he c
kodGreya [7K]
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3 years ago
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4 0
3 years ago
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